In linguistics, a subject pronoun is a personal pronoun that is used as the subject of a verb. Subject pronouns are usually in the nominative case for languages with a nominative–accusative alignment pattern.
In English the subject pronouns are I, you, he, she, it, we, they, what, and who. With the exception of you, it, and what, and in informal speech who, the object pronouns are different: i.e. me, him, her, us, them and whom (see English personal pronouns).
In some cases, the subject pronoun is not used for the logical subject. For example, Exceptional Case Marking (ECM) constructions involve the subject of a non-finite clause which appears in the object form (e.g., I want him to go.) In colloquial speech, a coordinated first person subject will often appear in the object form even in subject position (e.g., James and me went to the store.) This is corrected so often that it has led to cases of hypercorrection, where the subject pronoun is used even in object position under coordination (e.g., Marie gave Susana and I a piece of cake.)